<html>
    <head>
       <title>Error</title>
       <style>
           body {
               width: 35em;
               margin: 0 auto;
               font-family: Tahoma, Verdana, Arial, sans-serif;
           }
       </style> 
    </head>
    <body>
        <h1>What?</h1>
        <p>Sorry,您访问的资源丢失!!!</p>
    </body>
</html>